Use a reserved stack local variable to store the Code object so that it can be looked up easily whe…

vm/code_generator_ia32.h

Index: vm/code_generator_ia32.h
===================================================================
--- vm/code_generator_ia32.h	(revision 7576)
+++ vm/code_generator_ia32.h	(working copy)
@@ -10,6 +10,7 @@
 #endif
 
 #include "vm/assembler.h"
+#include "vm/assembler_macros.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
 #include "vm/parser.h"
@@ -119,6 +120,8 @@
   static bool CanOptimize();
 
  private:
+  static const int kLocalsOffsetFromFP = (-1 * kWordSize);
+
   // TODO(srdjan): Remove the friendship once the two compilers are properly
   // structured.
   friend class OptimizingCodeGenerator;